An experimental design testing the hypothesis that group A will score higher on a measure than group B would use a ______ test to test for differences between the two groups.

A) zero-tailed
B) one-tailed
C) two-tailed
D) three-tailed

One-tailed

A type of statistical test that predicts the direction of the expected difference or relationship.

Two-tailed

A test in statistics where the critical area of a distribution is two-sided and tests whether a sample is greater than or less than a certain range of values.

Zero-tailed

Refers to a type of hypothesis test in statistics where the area of interest is on one extreme end of the distribution curve, indicating whether a sample mean is either significantly higher or lower than the population mean.